Since joining the board less than a month ago, pinguin has accumulated four official warnings. Before the most recent one, he was informed that if he got another he would be banned. He did, and he is.
His warnings are here:
Most recent warning:
http://boards.straightdope.com/sdmb/showpost.php?p=13745391&postcount=10
Warning in which he was told he was on his last chance:
http://boards.straightdope.com/sdmb/showpost.php?p=13710350&postcount=367
Previous warnings:
http://boards.straightdope.com/sdmb/showpost.php?p=13698894&postcount=199
http://boards.straightdope.com/sdmb/showpost.php?p=13696586&postcount=7